Wheel-rim.



F. MACK.-

WHEEL RIM.

APPLICATION HLED SEPT. 29, 1914.

1 179,01 Patented Apr. 11, 1916.

. 1 I Svwentoz I a 1 ammal,

FRANKLIN MACK, or ONAWAY, MICHIGAN.

WHEEL-RIM.

Specificatiofi L s Pate-ml" I Patenteanpr. 11,1916:

Application filed September 29, 1914. Serial No. 864,125.

To all whom it may concern:

Be it known that I, FRANKLIN MACK, a citizen of the United States,residing at Onaway, in the county of Presque Isle and titate ofMichigan, have invented new and useful Improvements in VVheel-Rims, ofwhich the following is a specification.

This invention relates to wheel rims and more particularly to the rimsof the steering or controlling wheels of automobiles, motor cars, motortrucks and the like, the object of the invention beingto produce aparticularly strong and durable rim of the character referred to whichis sectional in construction in the initial manufacture thereof, thesections being of such a character and relation to each other as to forma rim equallyas strong as though it were made in one plece.

With the above and other objects in view, the invention consists in thenovel construction, combination and arrangement of parts, as hereindescribed, illustrated and claimed.

In the accompanying drawings :Figure 1 is a plan view of a rim embodyingthe present invention. Fig. 2 is an edge view of a sufficient portionthereof to illustrate the character of the sections and their relationto each other. Fig. 3 is a perspective view of one of the sections inthe rough.

The-rim contemplated in this invention is composed of any desired numberof sections which are arranged in two circular series, the sections ofone series being arranged tooverlap and break joint with the sections ofthe other series and each section ofboth series being provided with adovetailed extension and dove-tailed recesses at opposite sides of saidextension and in the opposite end portions thereof, said recesses whenin complemental relation to each other serving to receive thedove-tailed extension of an abutting and overlapping section of theopposite series.

In the manufacture of the rim, I make up each of the sections in themanner illus trated in Fig. 3 in which it will be observed that thesection is of arcuate shape, and'embodies the main body portion 1, andthe dovetail shaped extension 2 having the undercut edges 3 at theopposite extremities thereof, the formationof the dove-tailed extension2 providing recesses 4 at opposite ends of the extension 2 and in theopposite end portions of the section. Two series A and B of saidsections are used in the construction of each run and the two series arebrought together in overlapping relation as shown so as to break jointat the point midway between the ends of the extension 2 of the adjacentsection of the other series. When the two series are thus combined, thedove-tailed extensions 2 of one series alternate with the dove-tailedextensions 2 of the other series, the adjacent recesses 4 of twoadjoining sections forming, in complemental relation to each other, acomplete recess of the exact size to receive one of the dovetailedextensions 2 as clearly shown in Fig. 2.

While the extreme edges 5 of the sections 'may be brought together andglued in abutting relationv to each other, it .is found desirable insome instances to connect the extremities '5 of the sections by a scarfjoint 6 shown in Fig. 2 as of zig-zag formation as this prevents theextremities of the sections from moving out of alinement with each othereven though the glue should fail to hold. It will of course beunderstood that all of the sections of the rim are glued togetherwherever they touch thus forming a practically continuous glued jointextending entirely around the rim and it will further be understood thatthe scarf joints 6 are also glued. After the sections in the rough havebeen coated with glue and assembled and subjected to pressure and afterthe glue has become set and hard, the composite structure is turned in alathe or the like and brought into the final finished conditionillustrated in Fig. 1. It will be understood that all of the sectionsare exactly alike therefore requiring only one pattern or templet towork from. Either a plane or scarf joint may be employed as founddesirable between the meeting ends of the sections of each series. Anymaterial may be used in manufacturing the sections of the rim such aswood, metal or hard rubber.

What I claim is A wheel rim composed of two circular series of arcuatesections, each series forming one of a pair of circular wheel rimsections both of which are of uniform formation and diameter, thesections of one series In testimony whereof I affix my signature beingarranged to overlap and break joint in presence of two Witnesses. Withthe sections of the other series and each section of both series beingprovided on its FRANKLIN MACK. 5 inner face With a dove-tailedextension, the "Vitnesses:

dove-tailed extensions of said Wheel sec- ARTHUR W. WILGOX,

tions interfitting and interlocking. J. A. VALENTINE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

